<template>
  <view class="login-container">
    <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
    <button
      type="primary"
      class="btn-login"
      open-type="getUserInfo"
      @getuserinfo="getUserProfile"
    >
      一键登录
    </button>
    <text class="tips-text">登录后尽享更多权益</text>
  </view>
</template>

<script>
import { mapMutations, mapState } from 'vuex'

export default {
  data() {
    return {}
  },
  computed: {
    ...mapState('m_user', ['redirectInfo'])
  },
  methods: {
    ...mapMutations('m_user', [
      'updateUserInfo',
      'updateToken',
      'updateRedirectInfo'
    ]),
    // 用户授权之后，获取用户的基本信息
    getUserProfile(e) {
      console.log('info:')
      console.log(e)

      if (e.detail.errMsg === 'getUserInfo:fail auth deny')
        return uni.$showMsg('您取消了登录授权！')

      console.log(e.detail.userInfo)
      this.updateUserInfo(e.detail.userInfo)

      this.getToken(e.detail)
    },
    async getToken(info) {
      // 获取 code 对应的值
      const [err, res] = await uni.login().catch((err) => err)

      if (err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败！')

      // 准备参数
      const query = {
        code: res.code,
        encryptedData: info.encryptedData,
        iv: info.iv,
        rawData: info.rawData,
        signature: info.signature
      }

      const { data: loginResult } = await uni.$http.post(
        '/api/public/v1/users/wxlogin',
        query
      )
      console.log(loginResult)
      if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')

      // 直接把 token 保存到 vuex 中
      this.updateToken(loginResult.message.token)
      this.navigateBack()
    },
    navigateBack() {
      if (this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
        uni.switchTab({
          url: this.redirectInfo.from,
          complete: () => {
            this.updateRedirectInfo(null)
          }
        })
      }
    }
  }
}
</script>

<style lang="scss">
.login-container {
  height: 750rpx;
  background-color: #f8f8f8;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;

  &::after {
    content: ' ';
    display: block;
    width: 100%;
    height: 40px;
    background-color: white;
    position: absolute;
    bottom: 0;
    left: 0;
    border-radius: 100%;
    transform: translateY(50%);
  }

  .btn-login {
    width: 90%;
    border-radius: 100px;
    margin: 15px 0;
    background-color: #c00000;
  }

  .tips-text {
    font-size: 12px;
    color: gray;
  }
}
</style>
